Lock



W. F. DIESEL ANDLW. R. PRICE.-

LOCK. APPLICATION FILED APR. 13,1921.

Patented May 23, W22

MTTORNEY WILLIAM; nrnsnn or nocnns'rnn, AND WILLIAM n. nation, or new 'vonir, its. assrenons 'ro snnsnnr awn ennnn'tnnr, nc. on noonnsrnn, NEW YORK, A

conronz-rrron or new "YORK.

mamas.

To all whomz't nlay concern: v

Be it known that we, TVILLIA Duisnn, of Rochester, in the conntyof Monroe and State ofNew York, and. i VrLLI M It. Peron, of New York, in the county and State of New York, have invented certain new and useful Improvements in Locks; and we do hereby declarethe following to be a i ull clear, and exact description of the same reference being had to the accompanying drawings, forming a part of" this specification, and to the reference numerals f marked thereon.

Thisinvention'has to do with locks and relates more particularly to the variety employing keyoperated tumblers controlling the bolt, such are commonly employed on doors and other closures the chief: object of theinvention being to provide simple and economical look oi the above cll aracter' having); convenient tumbler ad usting means for selectively adaptmg a given lock tor operation by anyone, exclusively, of a plurality of keys, so that the key. to which the lock responds may be readily changed from time to time to render previous keys inoperative. and duplicate locks may be easily rendered responsive to different keys. To these and otherends the invention consists in certain improvements and combinations oil? parts, all as will he hereinafter more fully described, the novel. Features being; pointed out In the claims at the end of the speclfication. p

- In the drawings: r

Figure 1 is an external View of one sideojf a lock embodying); the present invention.

Figure 2 is a similar viefwof the other or rear side thereof. i

Figures and 4 are views similar to .l ure 1 with the forward side otthe casing; removed and showing the operating parts in different positions. I Figure 5 is a sectional view substantially Fignreh iSrjEt view of the barrel of the,

lock as seen from its rearend.

the. lock.

Similar reference characters throughout operated type generally applicable to doors and other closures and having. means for;

flpecification of Letters Patent. jf rtgmtterilltliaiy 23, was. Application'filed April 13, 1921. fierial'lwo. 461,137. i

changing; the key to which the lock responds, comprising preferably a casing having a rear side wall 11. and a removable front wall The present embodin'ient of the invention is suitable for attachment to the inner side oil? a closure such as a door and is formed at the corners of the casing with openings 13 to receive screws or other means securing the lock to the closure. The re movable front wall 12 which is thus placed against the closure inuse is held on the easing as by means of screws 14 entering threaded openings in lugs 15 carried interiorly by the casing. One end wall of the latter is provided with an opening in which slides a bolt 16, Figures 8 and 1 which is guided by the sides of the said opening and is bifurcated at its other end within the casing as at 17 to slidably engage a post 18 on thecasing. The bolt is thus supported andguided at both ends and also carries a lug 19 for engagement with a stop 20 on the casing to limit the outward movement of thebolt, the inner movement of the same beingvlilnitcd by d sengagement oiiits end with the casing.

Thenileans for sliding the bolt comprises ln'ei erably a notch or recess 21 in its lower side with which engages an arm 22 on a rotatable element or barrel 23 extending trans .versely through the casing and supported by its front and rearwalls. The forward side of the lock. which as stated, is adapted to beplaeed aga nst theinn'er side of a clos- @closure to the forward side oi the latter.

The barrel 23 extends throughboss 24: which has an open end provided. with a bearing; 25 rotatablysupporting a flange 26 on the end of the barrel. The latter thus extends to the outersurtace of the closure to expose an opening or keyhole with which it is provided. as descr bed hereafter. The rear wall of,

the casing is provided with an opening" y aiig'ned with boss 24 and formed with abear- .Figures, 7 and 8 are views of a ,eomple. mentarykey bit. and portable hey used with ing surface 2? Mammy supporting a flange 28 on the corresponding end ofthe barrel so that the latteris adapted to rotate in the casing-and, by means of its arm 22, to slide the bolt from the position shown in Figure 4 to that shown in Figure 5 and vice versa.

The meansrtor turning the barrel coro- PILSBSI an OPQTIll'lg Or keyhole 29 extending inwardly from its forward end and adapted to receive a key 30, The movement of the barrel and of the bolt is controlled, as usual in this type of lock, by a fence 31, in the present instance carried by the bolt, and cooperating with a set of tumblers each pivotally supported at one end on post l8 and formed at its opposite end with a slot 33 to receive the fence. The slots 33 of the different tumblers of which, in the present instance, there are six, are located at different distances from the lower sides of the respective tumblers, according to the particular system of the lock, and as well understood in the art, the tumblers must be so adjusted as to bring the slots 33 of all of them into registry with fence 31 before the bolt can be retracted. The tumblers are ad justed in this manner by key means inserted in the barrel and are normally urged toward the latter for cooperation with such key means by a leaf spring 3 f carried by each tumbler and bearing at its opposite end against a lug on the casing.

The key means for adjusting the tumblers comprises the key 30 referredto above as adapted-for insertion in the opening or keyhole 29 in the forward end of the barrel, and

.alsoa hole 35 extending inwardly of the barrel from its rear end and receiving a part or .key loit 36 adapted to be inserted at the rear side of the lock. The keyholes 29 and 35 are so arranged relative to each other as to bring the key 30 and key bit 36 when inserted in the lock side by side with their tumbler actuating portions under the set of tumblers. Key bit 36 as shown in Figure 5 has a blank portion 37 arranged to engage a flange 38 on the barrel to limit its movement inwardly of the look so that while readily inserted in and removed from the lock at the rear side of the latter with the bolt extended, the key bit cannot be removed or gotten at from the forward or front side of the lock.

The key bit 36 and the bit of key 30 have their tumbler actuating parts constructed in a complementary manner, the one adapted to actuate one or more, but not all of the tumblers, and the other to actuate those tumblers not actuated by the first. In the particular instance shown, key 30 is adapted to actuate the first, t d, fourth and sixth tumblers in order from the rear side of the lock, while the bit 36 is adapted to actuate the second and fifth tumblers. Thus neither the key, 30 nor bit 36 can be used separately to operate the look, but when used together they are adapted to raise all of the tumblers so'as to bring their slots 33 in registry with the; fence and permit the bolt to be withremoved after such use. The key bit 36 on the other hand is adapted to be inserted in the lock at its rear side when the closure is open and to be left in the lock to maintain the latter responsive at all times to the cover plate 39 for the kevholc 35, pivotally supported at 40 and. adapted alter the hey bit has been inserted in the barrel to be snapped back to the position shown in Figure 2 to hold the key bit in place. Also, a small opening 41 is preferably formed in the end of the key bit adjacent the rear end of the barrel so that any small hooked implement may be inserted through the space provided by the adjacent keyhole 29 and into open ing 41 for withdrawing the key bit from the barrel after the keeper plate 39 has been moved to one side.

It is apparent that a large number of complementary pairs of portable keys and key bits similar to the pair described above may be constructed and each pair employed in the complementary manner described for operating the look but the lock is responsive, of course, only to a portable key complementary to the particular key bit inserted in t r the lock so that the key bit employed at any time may be removed and replaced by a different one, thus rendering the portable key previously used with the lock inoperative. This substitution of one key bit for another, moreover, is readily affected by anyone without removing the lock, requiring no special knowledge or skill.

As apparent from the description and drawing the construction is exceedingly simple, reliable and inexpensive to manufacture, and provides a lock having a wide range of utility. Thus a series 0 t duplicate locks may be used each having the same key bit 36 inserted therein and operated by duplicate keys, and periodically or whenever desired a new key bit may be easily substituted in each lock thus rendering the portable key previously used useless and requiring a new portable key complementary to the new key bit for actuation of the lock. Or, a series of locks may be employed, as for instance in a security vault, each having a different key bit inserted therein and operable by a different portable key. By vary ing the tumbler construction, of course, the same key blt may be employed for use with a number of different portable keys. Should the key of a given lock become lost, a new key bit may be obtained and readily substituted in the lock for the old one, thus rendering the lock inoperative by the previous key and responsive only to a new portable key corresponding to the new key bit in the lock. Various modifications of the construction lOU lill) emme and uses described may, of course, be made,

the present embodiment being intended merely by Way of illustration of the principles involved and a preferred practical application thereof.

e claim as our invention: a

1. A look comprising a bolt, a plurality of tumblers, an element for moving the bolt under control of the tumblers, a part applicable to one side of the lock for adjusting certain of said tumblers, and a key applicable to another side of the lock for adjusting others of said tumblers and releasing said bolt.

2. A look comprising a bolt, a plurality of tumblers, an element for moving the bolt under control of the tumblers, a part corresponding to certain of the tumblers applicable to said element on one side of the lock, and a complementary key corresponding to the remainder'of the tumblers applicable to said element on the other side i of the lock for moving the same, adjusting said tumblers and moving the bolt.

8. A look comprising a bolt, a plurality oftumblers, an element for moving the bolt under control or. the tumblers having openings therein communicating With opposite sides of the look, a part corresponding to certain of the tumblers adapted lor msertion in an opening of said element on one side of the lock, and a key corresponding to others of the tumblers adapted for insertion in the opening of said element on the other side oi? the lock for moving said ele- ,ment and part, adjusting all of said tum blers and moving the bolt.

4;. A lock comprising a bolt, a plurality of tumblers, an element for moving the bolt under control of the tumblers, a key for adjusting certain of said tumblers adapted to be inserted in an opening in one side of the lock -for operating the latter and to be removed after such operation, and a part for adjusting the others of said tumblers adapted to be removably inserted in an opening in the other side of said lock and to remain therein to maintainthe lock responsiveto said key.

5.1 look comprisingua bolt, a set of tumblers, a barrel for moving the bolt under control of said tumblers, said barrel having openings in its ends communicating With provided With an openingat each end, a

portable key adapted to be removably inserted in one of said barrel openings to ad just certain of said tumblers, and a removable key bit for adjusting the others of said tumblers inserted in the barrel opening on the opposite side of the look from said key and adapted to remain in the lock to complement said portable key and permit the latter to turn the barrel and move the bolt.

7. A look comprising a bolt, an element for moving the bolt, aplurality of tumblers controlling movement oi the bolt, and a pair of removable complementary key bits adapted to be insertedlrom opposite sides of the lock for cooperating With each other to adjust said tumblers and'permit move ment of the bolt, one of said key bits being portable and the other adapted to remain in the lock for cooperation With said portable bit.

8. A. look comprising a bolt, an element for moving the bolt, a plurality of tumblers controlling movement of the bolt, a portable key adapted to be inserted and removed at one side of the look and to adjust certain o'l said tumblers, a key bit for adjusting the others of said tumblers adapted to be insorted and removed at the opposite side of said lock and to remain therein for cooperation With said portable key, and means for removably holding said key bit in the look.

WILLIAM F, DIESEL. WILLIAM R. PRICE. 

